Zero is a pay rate.
Try from this view. In atlantic province we have limited players. If one guys gun is not working he can't play. Less people = less fun. At some games I, and I am not the only one, have torn down peoples guns and fix them in the field on the spot.
I would love to meet the person who would pay someone 60$ an hour to work on an airsoft gun.... maybe if he was machining it out on a CNC mill and it is a one of a kind part, even still maybe.